// Copyright IBM 2017 All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//         http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.hyperledger.fabric.shim;

import org.hyperledger.fabric.protos.peer.ProposalResponsePackage.Response;

/**
 * Defines methods that all chaincodes must implement.
 */
public interface Chaincode {
	/**
	 * Called during an instantiate transaction after the container has been
	 * established, allowing the chaincode to initialize its internal data.
	 */
	public Response init(ChaincodeStub stub);

	/**
	 * Called for every Invoke transaction. The chaincode may change its state
	 * variables.
	 */
	public Response invoke(ChaincodeStub stub);
}
